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74ABT245CSJX Equivalent & Substitute Parts
Part Overview
The 74ABT245CSJX is a non-inverting transceiver IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOP package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74ABT245CSJX |
| Manufacturer | onsemi |
| Series | 74ABT |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the 74ABT245CSJX is determined by the following critical parameters:
- Logic Type: Transceiver, Non-Inverting
- Number of Elements: 1
- Number of Bits per Element: 8
- Output Type: 3-State
- Current - Output High, Low: 32mA, 64mA
- Voltage - Supply: 4.5V ~ 5.5V
- Operating Temperature: -40°C ~ 85°C (TA)
- Mounting Type: Surface Mount
- Moisture Sensitivity Level: 1 (Unlimited)
Substitute parts are grouped into two categories:
Similar Manufacturer Parts (Texas Instruments): Parts with identical electrical specifications and compatible packaging (20-SOIC), available in active product status with RoHS3 compliance. These include SN74ABT2245DW, SN74ABT2245DWR, SN74ABT245BDW, SN74ABT245BDWR, SN74ABTH245DW, and SN74ABTH245DWR.
Parametric Equivalent (Texas Instruments): SN74ABT245BNSR matches all electrical parameters and operates in the same temperature range but uses a 20-SO package variant (0.209", 5.30mm Width), maintaining mechanical compatibility with the original 74ABT245CSJX footprint.
Parameter Comparison
| Parameter | 74ABT245CSJX (Main) | SN74ABT2245DW | SN74ABT2245DWR | SN74ABT245BDW | SN74ABT245BDWR | SN74ABTH245DW | SN74ABTH245DWR | SN74ABT245BNSR |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Series | 74ABT | 74ABT | 74ABT | 74ABT | 74ABT | 74ABTH | 74ABTH | 74ABT |
| Logic Type | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting | Transceiver, Non-Inverting |
| Number of Elements | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High, Low | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.209", 5.30mm Width) |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
All substitute parts listed are manufactured by Texas Instruments and maintain active product status, ensuring long-term availability and supply chain stability. All Texas Instruments alternatives are RoHS3 compliant, meeting current environmental and regulatory requirements.
For designs requiring exact footprint compatibility with the original 74ABT245CSJX (20-SOIC 0.209" width), select SN74ABT245BNSR. This part maintains identical package dimensions while providing active product status and full RoHS3 compliance.
For designs with PCB layouts accommodating the wider 20-SOIC package (0.295" width), the SN74ABT2245DW, SN74ABT245BDW, and SN74ABTH245DW series offer multiple packaging options (Tube, Tape & Reel, Cut Tape) to match procurement and assembly requirements. The 74ABTH series variants provide equivalent electrical performance within the same operational envelope.
All substitute parts maintain identical electrical specifications: 32mA/64mA output current, 4.5V to 5.5V supply voltage range, and -40°C to 85°C operating temperature. MSL rating of 1 (Unlimited) is consistent across all alternatives.
Frequently Asked Questions (FAQ)
Q: Can SN74ABT2245DW be used as a direct replacement for 74ABT245CSJX?
A: SN74ABT2245DW is electrically equivalent and functionally compatible. However, the package width differs: SN74ABT2245DW uses 20-SOIC (0.295", 7.50mm Width) versus the original 74ABT245CSJX (20-SOIC 0.209", 5.30mm Width). PCB layout verification is required to confirm footprint compatibility.
Q: What is the difference between SN74ABT245BDW and SN74ABTH245DW?
A: Both parts are electrically and functionally identical with matching output current specifications (32mA, 64mA) and operating temperature range (-40°C to 85°C). The primary difference is the series designation: 74ABT versus 74ABTH. Both are active products with RoHS3 compliance.
Q: Is SN74ABT245BNSR a pin-compatible replacement?
A: SN74ABT245BNSR maintains the same pin configuration and electrical specifications as the 74ABT245CSJX. The package designation differs (20-SO versus 20-SOP), but both use identical 0.209" width dimensions, ensuring PCB footprint compatibility.
Q: Why are all substitute parts from Texas Instruments?
A: The provided substitute list contains only Texas Instruments alternatives that meet the specified electrical and mechanical parameters for this 74ABT transceiver category. All alternatives maintain active product status and RoHS3 compliance.
Q: What packaging options are available for the substitute parts?
A: Substitute parts are available in three packaging formats: Tube (standard packaging), Tape & Reel (TR) for automated assembly, and Cut Tape (CT) & Digi-Reel for flexible procurement. Selection depends on assembly method and order quantity requirements.
Q: Are all substitute parts MSL 1 rated?
A: Yes, all substitute parts listed maintain MSL 1 (Unlimited) rating, matching the original 74ABT245CSJX specification. This indicates unlimited shelf life without moisture bake requirements.
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